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Polymer solid aluminum electrolytic capacitor manufacturing method applicable for alternating current circuit

A technology for electrolytic capacitors and manufacturing methods, applied in the direction of solid electrolytic capacitors, electrolytic capacitors, capacitors, etc., can solve the problems of restricting the use of solid capacitors, low formation voltage, and inability to apply AC circuits, etc., and achieves benefits for absorption and impregnation, and production costs Low, good consistency

Active Publication Date: 2013-10-02
FOSHAN SANSHUI RIMING ELECTRONCS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anodized foil that constitutes a solid electrolytic capacitor is usually made of aluminum foil with a purity greater than 99.3%. After chemical corrosion and increased surface area, it is more necessary to use a certain voltage for formation. Therefore, anodized foil has a certain formation voltage. However, the cathode foil has no formation voltage or extremely low formation voltage. Therefore, the existing solid electrolytic capacitors have polarity and cannot be used in AC circuits, which greatly limits the use of solid capacitors in AC circuits.

Method used

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  • Polymer solid aluminum electrolytic capacitor manufacturing method applicable for alternating current circuit
  • Polymer solid aluminum electrolytic capacitor manufacturing method applicable for alternating current circuit
  • Polymer solid aluminum electrolytic capacitor manufacturing method applicable for alternating current circuit

Examples

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Embodiment 1

[0032] refer to Figure 1 to Figure 3 , this embodiment provides a polymer solid aluminum electrolytic capacitor suitable for AC circuits, which includes a first connection terminal 1 , a second connection terminal 2 , a rubber cover 3 , an aluminum shell 4 and a core package 5 . The core pack 5 is composed of a first anodized aluminum foil 50 , a second anodized aluminum foil 51 , electrolytic paper 52 and a polymer electrolyte. The upper end of the first anodized aluminum foil 50 is riveted to the first connection terminal 1 , and the upper end of the second anodized aluminum foil 51 is riveted to the second connection terminal 2 . The electrolytic paper 52 is further composed of three layers of non-woven fabrics, wherein the upper layer 52a and the lower layer 52b are respectively coated spunbonded non-woven fabrics with a thickness of about 20 μm; The polyester fibers of the viscose nonwoven fabric have an average diameter of 10 to 20 μm, and the PET fibers constituting t...

Embodiment 2

[0041] This embodiment provides a method for manufacturing a 4V220μF8*8mm shell size capacitor product. The structure of the capacitor product is the same as that in Embodiment 1. The method specifically includes the following steps:

[0042] (1) Use an anodized aluminum foil with a formation voltage of 7.7V, and rivet the guide pin on the anodized aluminum foil;

[0043] (2) Take two pieces of anodized aluminum foil riveted with a guide pin, and use the electrolytic paper described in Example 1 in the middle, wind it into a core bag with a theoretical capacity of 330 μF, and fix it with tape;

[0044] (3) Weld the two guide pins of the core package to the iron bar, immerse them in the chemical solution so that the chemical solution just submerges the core package, apply a forming voltage of 7.7V, and perform chemical conversion repair on the two anodized aluminum foils at the same time, The processing time is 40 minutes;

[0045] (4) Put the core package after chemical conve...

Embodiment 3

[0057] This embodiment provides a method for manufacturing a 6.3V470μF8*12mm shell size capacitor product. The structure of the capacitor product is the same as that in Embodiment 1. The method specifically includes the following steps:

[0058] (1) Use an anodized aluminum foil with a formation voltage of 11V, and rivet the guide pin on the anodized aluminum foil;

[0059] (2) Take two pieces of anodized aluminum foil riveted with a guide pin, and separate them with the electrolytic paper described in Example 1, wind them into a core pack with a theoretical capacity of 660 μF, and fix them with adhesive tape;

[0060] (3) Weld the two guide pins of the core package to the iron bar, immerse them in the chemical solution so that the chemical solution just submerges the core package, apply a 11V forming voltage, and perform chemical conversion repair on the two anodized aluminum foils at the same time. The time is 40 minutes;

[0061] (4) Put the core package after chemical con...

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Abstract

The invention relates to a polymer solid aluminum electrolytic capacitor manufacturing method applicable for an alternating current circuit. The polymer solid aluminum electrolytic capacitor manufacturing method applicable for the alternating current circuit comprises steps that: (1), anodized aluminum foils are riveted with guide needles; (2), electrolytic paper is placed between two anodized aluminum foils riveted by the guide needles, the three parts are coiled together to form a core bag, the electrolytic paper is prepared from three layers of non-woven fabric, an upper layer and a lower layer are respectively a coated fiber spun-bonded non-woven fabric, a middle layer is a PET non-woven fabric; (3), the core bag is dipped into a formation liquid, and restoration processing for the two anodized aluminum foils is simultaneously carried out; (4), the core bag is placed in a baking oven with temperature of 85-200 DEG C for dehydration; and (5), the processed core bag is respectively placed in a monomer and an oxidizing agent for impregnation and is heated for polymerization to form a polymer dielectric which is packaged in an aluminum casing and sealed, so a capacitor is obtained. The polymer solid aluminum electrolytic capacitor manufacturing method has properties of simple technology, high production efficiency and low production efficiency, realizes application of products in the alternating circuit and has advantages of low series equivalent resistance, high temperature resistance and long service life.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolytic capacitors, in particular to a method for manufacturing a polymer solid aluminum electrolytic capacitor suitable for AC circuits. Background technique [0002] Compared with ordinary liquid electrolytic capacitors, solid electrolytic capacitors have outstanding electrical properties, such as low equivalent series resistance (ESR), high ripple current resistance, long service life, and stable performance. [0003] The existing solid electrolytic capacitor includes an aluminum case, a core package arranged in the aluminum case, a rubber cover arranged on the top of the core package and sealedly connected with the aluminum case, a positive terminal, and a negative terminal. Generally, the core pack includes anodized aluminum foil, cathode foil, electrolytic paper and polymer electrolyte arranged between the anodized aluminum foil and the cathode foil, and the positive and negative termi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/15H01G9/04H01G9/055
Inventor 胡用利黄振彬周威耀胡勇杨宏曾昭武黎展途罗志平王贺平何斌宋文汇
Owner FOSHAN SANSHUI RIMING ELECTRONCS
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